An advisory issued by the Department of Homeland Security and Siemens Healthineers identifies cybervulnerabilities in the Windows 7-based versions of Siemens PET/CT systems, SPECT systems, SPECT/CT Systems and SPECT Workplaces/Symbia.net. The company, now developing updates for the diagnostic imaging systems, recommends operating the systems in a dedicated network segment and protected IT environment or disconnecting the devices from networks and reconnecting them after installing the provided patch.